40n+90=30n+100

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Solution for 40n+90=30n+100 equation: 



40n+90=30n+100

We move all terms to the left:

40n+90-(30n+100)=0

We get rid of parentheses

40n-30n-100+90=0

We add all the numbers together, and all the variables

10n-10=0

We move all terms containing n to the left, all other terms to the right

10n=10

n=10/10

n=1

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